Beam form clamp



A 'I/III T- C. SCHENK BEAM FORM CLAMP Filed Jan. 7, 1930 INVENTOR Dec. 1, 1931.

III

1 II/II Patented Dec. 1, 1931 PATENT/.3

OFFICE TAMIS o. SCHENK, on BROOKLYN, NEW YORK, ASSiGiTOB 'ro RICHMOND SCREW ANCHOR 00., me, or BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK BEAM roman;

Application fll edlannary 7, 1980, Serial No. 419,150.

The object of my invention is to provide a clamp which will securely hold a'form about an I-beam when the same is poured in the con ventional manner to protect the beam and thereafter permit a ready removal of the form and a portion of the clamp, the remainder being embedded in the concrete where it remains. A further object is to provide a nut securely held to the beam which will be useful for supporting machinery or other deon the lines 22 and 33 respectively of Fig.

'1, looking in the direction of the arrows.

Throughout the various views of the drawings, s1m1lar reference characters designate similar parts.

My improved clamp 1 may be applied to a beam 2 which is preferably an I-beam al- I though it may be any suitable shape, to secure a form 3 in place while the same is poured.

The clamp 1 is composed of alever 4 with a fulcrum 5 which draws one end of the lever against a bent plate 6, and the other end against a flange 7 of the beam 2, another surface of this flange 7 beingpressed' by the bent plate 6. The bottom part of bent plate 6 rests on the wooden form 3 and spaces the form at the required-distance from the beam to the depth of fireproofing. -It will be noted that the bent plate 6 has a top with two levels, the upper level being raised so as to engage the rear of the lever 4 and-the other edge being lowered so as to rest against the lower surface of the web 7, and the dif ference between the two levels is substantially the thickness of the flange 7 This is a desirable but not an essential feature of my invention'. Thebent plate 6-is preferably ex panded at its longitudinal centre and adjacent to the fulcrum 5 so as to provide'guides 8 for-this fulcrum: which fits these grooves, one on, each side with a tight sliding fit, so that theparts will not readily become detached whenIonce they are assembled.

The fulcrum 5 is bent something in the shape'ofa' hairpin with the lower ends slightly separated, and connected by the helix 9 i which is welded to the ends 10 of this fulcrum 5, and these ends slide as above stated in the guides 8. The helix is adapted to engage an eye-bolt 11 wvhich passes througha perforated plate 12 and througha perforation 13 in the form 3, as indicated, and a flange l4 justlabove theloop 15 of this eye-bolt presses against the plate l2 as indicated, so that'whenthebolts are assembled as shown, the plate 12 presses the form 3 against the part Sand-draws the lever 4 through the fulcrum 5 againstthe flange 7 and the part 6 as above stated, so that the parts above mentioned are held firmly.

It will be understood that as many of these clamps are employed as necessary to properly support the form and more than this if desired, for a reason which will appear below.

After concrete has been poured into the forms and has set in the conventional manner, the forms may be readily removed by placing a hook through'each eye 15 and unfor the eye-bolt 11 and the plate 12 whichmay be used again after the eye-bolt has been machinery or other fixtures to the ceiling on the underside of the concrete or they may be used to support a false ceiling if such be desired. If no such use be desired, the holes left by the eye-bolts maybe plugged with i concrete and a finishing coat may either be placed or not placed over the concrete, as

desired. 7

While I have shown and described one embodiment of my invention, it is obvious that it is not restricted-thereto, but that it isbroad enough'to coverall structures that come within the scope of the annexed claims.

Having thus described my invention, What I claim is:

1. In a device 'ofthe class-describedmbent plate having guides therein, a fulcrum adapted to slide in said guides and provided fiith a lever, with one end to engage theiplateanpl the other end adapted to press against a beam and force the same againstaaplate, and

ahelix secured to said fulcrum, and adapted to receivea bolt. 7 I i i 2. In a device of the class described-,a bent platerhaving guides therein, a fulcrum aid-apt edtoslide insaid guides and provided with I a lever, Withoneend to engage the plate and the other'e'n'd-adapted t'o press against a beam and forcegthersame against a platepand a helix secured ,to said fulcrum adaptedto receive albolt, and a bolt in said helix. r 3. In a device of the class described, a bent plate having guides therein, a fulcrum adapted to slide in said guides and providedwitha lever with one. end to engage the plate and the other end adapted topress'agamst a beam and force the same against a plate, and a heli-xsecured to saidfulcrum adaptedto re= ceive "a bolt. and an eye-bolt:in-said helix.

;In.-te'stirn0ny WhereofiI have hereunto set my hand this 2nd day-ofJanuary,1'930.

V I a r c 1 C. S GHENK. 

